# Magnetism and Matters MCQs Mock Test of Class 12th Physics

Welcome to your Magnetism and Matters MCQs Mock Test of Class 12th Physics

1.
Q.1. The radius of curvature of the path of charged particle in a uniform magnetic file is directly proportional to the

2.
Q.2. The Mariner’s compass is provided with Gimbals arrangement so as to :

3.
Q.3. The relation between geometric length (L) and magnetic length (Lm) is:

4.
Q4.At a given place on earth’s surface the horizontal component of earth’s magnetic field is 2 × 103-5 T and resultant magnetic field is 4 × 103-5 T. The angle of dip at this place is

5.
Q.5. Ferrites may be:

6.
Q.6. The magnetic lines of force inside a bar magnet:

7.
Q.7. What is the angle of dip at a place where the horizontal component of earth’s magnetic field is equal to the vertical component?

8.
Q.8. Which of the following has a low value in ferrites?

9.
Q.9. S.I. unit of flux is :

10.
Q.10. The dimensional representation of magnetic flux density is :

11.
Q.11. A magnetic dipole moment is a vector quantity directed from:

12.
Q.12. Tangent law is applicable only when:

13.
Q13. Which of the following property shows the property of ferromagnetic substances?

14.
Q14. The primary origin of magnetism lies in

15.
Q15. S.I. unit of flux is :

16.
Q16. What is the angle of dip at a place where the horizontal component of earth’s magnetic field is equal to the vertical component?

17.
Q17. Which of the following has a low value in ferrites? e

18.
Q18. The dimensional representation of magnetic flux density is :

19.
Q19. Tangent law is applicable only when:

20.
Q20. Ferrites may be:

21.
Q21. The magnetic lines of force inside a bar magnet:

22.
Q22. A magnetic dipole moment is a vector quantity directed from:

23.
Q23. What is the magnetic field in the empty space enclosed by the toroidal solenoid of radius ‘R’? ,

24.
Q24. A current carrying power line carries current from west to east. What will be direction of magnetic field 1 meter above it?

25.
Q25. The dimensional representation of l/MB−−−−−√ is similar to that of:

26.
Q26. On quadrupling the moment of inertia of a magnet, its frequency of oscillation will become:

27.
Q27. The magnetic field strength due to a short bar magnet directed along its axial line at a distance r is B. What is its value at the same distance along the equatorial line?

28.
Q28. The neutral point in the magnetic field of a horizontally placed bar magnet is a point where the magnetic field due to that bar magnet is:

29.
Q29. In a moving coil galvanometer, we use a radial magnetic field so that the galvanometer scale is :

30.
Q30. The force between two parallel wire 2 × 10-7 Nm-1, placed 1 m apart to each other in vacuum. The electric current flowing through the wires is:

31.
Q31. The force acting per unit length of a semi circular wire of radius R carrying a current I is:

32.
Q32. Which of the following has higher magnetic susceptibility?

33.
Q33. The magnetic field of earth is due to:

34.
Q34. In a bar magnet, magnetic lines of force z :

35.
Q35. The Mariner’s compass is provided with Gimbals arrangement so as to :

36.
Q36. A wire of length I has a magnetic moment M. It is then bent into a semi-circular arc. The neyv magnetic moment is :

37.
Q37. The relation between geometric length (L) and magnetic length (Lm) is:

38.
Q38. The radius of curvature of the path of charged particle in a uniform magnetic file is directly proportional to the

39.
Q39. The magnetic field at the centre of a current carrying circular loop is B. If the radius of the loop is doubled keeping the current unchanged, the magnetic field at the centre of loop will become:

40.
Q.40. In a moving coil galvanometer, we use a radial magnetic field so that the galvanometer scale is :

41.
Q.41. On quadrupling the moment of inertia of a magnet, its frequency of oscillation will become:

42.
Q.42. Magnetic moment for solenoid and corresponding bar magnet is

43.
Q.43. The neutral point in the magnetic field of a horizontally placed bar magnet is a point where the magnetic field due to that bar magnet is:

44.
Q.44. A current carrying power line carries current from west to east. What will be direction of magnetic field 1 meter above it?

45.
Q.45.Magnetic moment for solenoid and corresponding bar magnet is

46.
Q.46. In a bar magnet, magnetic lines of force :

47.
Q.47. Which of the following has higher magnetic susceptibility?

48.
Q.48. The force between two parallel wire 2 × 10-7 Nm-1, placed 1 m apart to each other in vacuum. The electric current flowing through the wires is:

49.
Q.49. The magnetic field of earth is due to:

50.
Q50. Which of the following is correct about magnetic monopole?